{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell type", "DNA", "RNA", "protein", "cell line"], "input": "Tat , a potent activator of HIV-1 gene expression , serves to greatly increase the rate of transcription directed by the viral promoter ."}
{"cell type": [], "DNA": ["viral promoter"], "RNA": [], "protein": ["Tat"], "cell line": []}